<template>
  <div class="container">
    <div class="app-container">
      <!-- 角色管理内容 -->
      <div class="role-operate">
        <el-button
          size="mini"
          type="primary"
          @click="showDialog = true"
        >添加角色</el-button>
      </div>
      <!-- 放置table组件 -->
      <el-table :data="list">
        <!-- 放置列 -->
        <el-table-column prop="name" align="center" width="200" label="角色">
          <template v-slot="{ row }">
            <el-input
              v-if="row.isEdit"
              v-model="row.editRow.name"
              size="mini"
            />
            <span v-else>{{ row.name }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="state" align="center" width="200" label="启用">
          <!-- 自定义列结构 -->
          <template v-slot="{ row }">
            <!-- 开 1 关 0 -->
            <el-switch
              v-if="row.isEdit"
              v-model="row.editRow.state"
              :active-value="1"
              :inactive-value="0"
            />
            <span v-else>{{
              row.state === 1 ? "已启用" : row.state === 0 ? "未启用" : "无"
            }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="description" align="center" label="描述">
          <template v-slot="{ row }">
            <el-input
              v-if="row.isEdit"
              v-model="row.editRow.description"
              type="textarea"
              size="mini"
            />
            <span v-else>{{ row.description }}</span>
          </template>
        </el-table-column>
        <el-table-column align="center" label="操作">
          <template v-slot="{ row }">
            <template v-if="row.isEdit">
              <!-- 编辑状态 -->
              <el-button
                type="primary"
                size="mini"
                @click="btnEditOK(row)"
              >确认</el-button>
              <el-button
                size="mini"
                @click="btnEditCancel(row)"
              >取消</el-button>
            </template>
            <template v-else>
              <!-- 非编辑状态 -->
              <el-button type="text" size="mini">分配权限</el-button>
              <el-button
                type="text"
                size="mini"
                @click="btnEditRow(row)"
              >编辑</el-button>
              <el-popconfirm
                title="这是一段内容确定删除吗？"
                @onConfirm="confirmDel(row.id)"
              >
                <el-button
                  slot="reference"
                  style="margin-left: 10px"
                  size="mini"
                  type="text"
                >删除</el-button>
              </el-popconfirm>
            </template>
          </template>
        </el-table-column>
      </el-table>
      <!-- 放置分页组件 -->
      <el-row type="flex" justify="end" align="middle" style="height: 60px">
        <el-pagination
          :page-size="pageParams.pagesize"
          :current-page="pageParams.page"
          :total="pageParams.total"
          layout="prev, pager, next"
          @current-change="changePage"
        />
      </el-row>
    </div>
    <!-- 弹出层 -->
    <el-dialog
      :visible.sync="showDialog"
      title="新增角色"
      width="500px"
      @close="btnCancel"
    >
      <!-- 表单内容 -->
      <el-form
        ref="roleForm"
        :rules="rules"
        :model="roleForm"
        label-width="120px"
      >
        <el-form-item prop="name" label="角色名称">
          <el-input v-model="roleForm.name" style="width: 300px" size="mini" />
        </el-form-item>

        <el-form-item prop="state" label="启用">
          <el-switch
            v-model="roleForm.state"
            :active-value="1"
            :inactive-value="0"
            size="mini"
          />
        </el-form-item>

        <el-form-item prop="description" label="角色描述">
          <el-input
            v-model="roleForm.description"
            type="textarea"
            :rows="3"
            style="width: 300px"
            size="mini"
          />
        </el-form-item>
        <el-form-item>
          <el-row type="flex" justify="center">
            <el-col :span="15">
              <el-button
                type="primary"
                size="mini"
                @click="btnOK"
              >确定</el-button>
              <el-button type="" size="mini" @click="btnCancel">取消</el-button>
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
    </el-dialog>
  </div>
</template>
<script>
import { getRoleList, addRole, updateRole, delRole } from '@/api/role'
export default {
  name: 'Role',
  data() {
    return {
      showDialog: false,
      list: [],
      // 将页面信息放在一个对象中
      pageParams: {
        page: 1, // 当前页数,默认为1
        pagesize: 5, // 一页显示几条
        total: 0 // 一共有几条,初始为0
      },
      roleForm: {
        name: '',
        description: '',
        state: 0
      },
      rules: {
        name: [
          { required: true, message: '角色名称不能为空', trigger: 'blur' }
        ],
        description: [
          { required: true, message: '角色描述不能为空', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getRoleList()
  },
  methods: {
    // 点击了确定触发的
    async confirmDel(id) {
      await delRole(id) // 后端删除
      this.$message.success('删除角色成功')
      // 删除的如果是最后一个
      if (this.list.length === 1) this.pageParams.page--
      this.getRoleList()
    },
    // 编辑里的确认
    async btnEditOK(row) {
      console.log(row)

      if (row.editRow.name && row.editRow.description) {
        // 下一步操作
        await updateRole({ ...row.editRow, id: row.id })
        // 更新成功
        this.$message.success('更新角色成功')
        // 更新显示数据  退出编辑状态
        // row.name = row.editRow.name // eslint的一校验 误判
        // Object.assign(target, source)
        Object.assign(row, {
          ...row.editRow,
          isEdit: false // 退出编辑模式
        }) // 规避eslint的误判
      } else {
        this.$message.warning('角色和描述不能为空')
      }
    },
    // 编辑里的取消
    btnEditCancel(row) {
      // console.log(row)
      row.isEdit = false
    },
    // 点击编辑行
    btnEditRow(row) {
      row.isEdit = true
      row.editRow.name = row.name
      row.editRow.state = row.state
      row.editRow.description = row.description
    },
    btnOK() {
      this.$refs.roleForm.validate(async(isOK) => {
        if (isOK) {
          await addRole(this.roleForm)
          this.$message.success('新增角色成功')
          this.getRoleList()
          this.btnCancel()
        }
      })
    },
    btnCancel() {
      this.$refs.roleForm.resetFields() // 重置表单
      this.showDialog = false
    },
    async getRoleList() {
      const { rows, total } = await getRoleList(this.pageParams)
      this.list = rows
      this.pageParams.total = total
      // 针对每一行数据添加一个编辑标记
      this.list.forEach((item) => {
        this.$set(item, 'isEdit', false)
        this.$set(item, 'editRow', {
          name: item.name,
          state: item.state,
          description: item.description
        })
      })
    },
    changePage(newPage) {
      this.pageParams.page = newPage
      this.getRoleList()
    }
  }
}
</script>
<style scoped>
.role-operate {
  padding: 20px;
}
</style>
